CH1: A Brief History of Energy

Question 1

Alternating Current (AC)

Answer 1

an electric current that reverses direction at regular intervals; caused by an alternating electromotive force (the force that produces an electric current)

Question 2

Alloy

Answer 2

a mixture of different metals

Question 3

Alternator

Answer 3

an electric generator that produces alternating current

Question 4

Blast Furnace

Answer 4

a furnace in which the combustion of a fuel is intensified using blasts of air or pure oxygen

Question 5

Charcoal

Answer 5

a material containing large quantities of carbon, formed by heating wood or other organic material in the absence of air

Question 6

Coke

Answer 6

a fuel that burns very hot; used primarily in metal production

Question 7

Combustion

Answer 7

the process of burning, which is a chemical change requiring the presence of oxygen that results in the production of heat and light

Question 8

Direct Current (DC)

Answer 8

an electric current that flows only in one direction

Question 9

Dynamo

Answer 9

an electric generator that usually produces direct current

Question 10

Electromagnetism

Answer 10

the phenomena of producing electricity using magnetism and vice versa

Question 11

Energy Conservation

Answer 11

management of energy resources and energy to prevent waste, reduce costs, and ensure future availability

Question 12

Fossil Fuel (definition)

Answer 12

the remains of once-living plants and animals formed underground and subjected to intense heat and pressure over millions of years; can be burned to produce energy

Question 13

Fossil Fuels (examples)

Answer 13

coal, oil, natural gas

Question 14

Generator

Answer 14

a machine that transforms (converts) mechanical energy into electrical energy

Question 15

Geothermal Energy

Answer 15

the heat energy of the earth

Question 16

Heat Engine

Answer 16

any device that converts heat energy into mechanical energy (steam engine, gas turbine, or internal combustion engine)

Question 17

Hydropower

Answer 17

the mechanical force of rapidly flowing or falling water from rivers or storage reservoirs

Question 18

Industrial

Answer 18

the practice of making goods; the production of large quantities of manufactured items

Question 19

Industrial Revolution

Answer 19

the shift to large-scale factory production brought about by the extensive use of machinery; resulted in dramatic social, environmental, and economic changes